When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both. If that has worn out, you will have the problem you're describing. NOTE: Do not stretch, bend or compress primer spring. Answer Save. However, in some unfortunate cases, the primer bulb gets damaged or stops working. I've done 3 -- I've done as many as 12 and I still have to pull and pull and pull to get it started. It works by squirting fuel into your engine. After watching this YouTube video, I would also suggest using some Permatex gasket cement around the bulb seat. Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. PRIMER BUTTON will not work. It can also mean the bulb has deteriorated and does not create pressure when the bulb is pressed. 125b Huskvarna blower is not working. can't get it to start as the primer bulb is not pushing the fuel to the carb. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. I need to adjust the speed of my snowblower. Check the primer bulb to make sure it is working. Also the white tube on the carb has been the cause of bad starting as it should be sealed (possibly a running change due) if the primer bulb is fitted in the middle of the air filter cover as not enough fuel is being pushed up. Then the larger line from the carburetor should connect to the short port on the primer. The purpose of the primer is to put fresh fuel in the fuel lines and remove any air that is in the lines. Toro says priming three times is supposed to be enough. If the primer bulb is not working, you may need to troubleshoot it. gas flowed freely , but will only start when I pours little gas into bowl on top of carb then shuts off as soon as that gas is gone. The primer bulb should have some type of a in/out diaphragm under it. It is the easiest way to use a lawn mower, and many users swear by it. Push primer button not working on snowblower...if I pour gas in it works but won't turn over, lines aren't broken...? I'm at my wit's end with this thing. That should solve your issue as long as your lines are in good condition. Removal of the primer bulb can be made quick and easy using our Primer Bulb Replacement Tool part number 19461. The bulb should feel like it is pushing gas into the carburetor. Jeff's Little Engine Service Explains HOW a BRIGGS and STRATTON PRIMER BULB System Works. Remove primer seat using a crochet hook or other type of hook. If it's not working, then you either have a bad primer bulb, plugged fuel lines or in-tank filter, or plugging in the small ports of the carburetor on the fuel pump side. Was told that a new carberator was installed. MSI Mobo, Phenom II CPU, Win 7/64 Premium, 8GB DDR3 Ram, Chrome, Avast, Malwarebytes Re: Tecumseh primer not working [ Re: bilvihur ] #916501 Thanks!https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=P5QJK49G8V54S\u0026source=urlPLEASE KEEP IN MIND when you are watching my videos: I am showing you the least expensive, quickest \"backyard\" methods for repairing or servicing your lawnmower. If it still does the same, the carburetor has a bad diaphragm and the inner check valve is not working. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. If not, install a new bulb. Craftsman garage door opener model 139.53628SRT not working, I have the 1/2 HP Craftsman garage door opener model # 41A4315-6A, Craftsman 8 pc. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. What It Does. When the primer won't prime, the engine won't run. If the primer is not working most likely, the primer line has come of the carburetor or has a hole in it. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Vacuum is what makes that bulb work. Get more answers from the people in your networks. I pulled the tank and checked the filter and that appears okay as well. I would start by replacing the fuel filter since there's absolutely no way to … Usually three pumps of the carburetor bulbs is enough to start an engine. If it does not feel like it is moving gas the fuel line from the tank to the bulb may be clogged or disconnected. If it is clean, look for damage to the bulb or receptacle. It's a Toro mower. The primer with the tube is common over here on the big box store mowers. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. With these videos I hope you are able to fix and repair your lawnmower yourself with minimal parts, knowledge and tools. Once it's started, it runs just fine and will restart easily, if … - Answered by a verified Technician ... Primer bulb won't suck fuel. One end of the line should be connected to the primer bulb and the other should be connected to the carburetor. The darn thing still will not prime (no fule in the primer bulb). 3-7 HORSEPOWER ALL BRIGGS AND STRATTON motor with a PRIMER BUTTON BULB.Music by BonzaiRod. Will a craftsman snow blower 486.24837 fit my 917.258860 garden tractor? It has spark - carby is clean. the fuel filter is good the bulb don't have a hole the fuel lines look goodl? Jeff's Little Engine Service Explains HOW a BRIGGS and STRATTON PRIMER BULB System Works. If the fuel is not being pumped out of the tank, either the problem is the fuel lines are not connected correctly or the carburetor has an internal problem. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. Your question was published, help is on its way! You can tip the snow thrower on to its nose. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. Lawnmower PRIMING Button PROBLEM can be FIXED. Get shopping advice from experts, friends and the community! Lawnmower PRIMING Button PROBLEM can be FIXED. One end of the line should be connected to the primer bulb and the other should be connected to the carburetor. 2 Responses to How Primer Bulbs Work. Sometimes you have to replace the whole primer assembly (recommended anyway) and sometimes you can just replace that diaphragm. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. You can tip the snow thrower on to its nose. ... have a 10 hp --28 in yard machines snowblower. Replace any worn or cracked bulbs. Model 20017 Serial 220071311. Simply pulling on the starter rope will not draw fuel to the engine. Another cause of the primer's filling problem could be the bulb itself. Always work safe. 5 Answers. Remove the bulb assembly collar and the bulb. removed carb cover, confirmed fuel as far as bowl and partially drained bowl. \"George\"Copyright 2016 Jeff's Little Engine ServiceDonations are greatly appreciated and help me make vids, just click the Paypal link below. Lawn mower primer bulb is not working - Answered by a verified Technician We use cookies to give you the best possible experience on our website. A primer will pump a small amount of gas into the carburetor. Went to start it for the first time since I got it back and the primer is just sucking air and can't get to start. So there's only a few things that can go wrong. Ask Your Own Small Engine Question. You should be able to see the primer line. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. Primer bulb not filling Hi, I have a Poulan WT 200 leaf blower with a brand new 530071775 carb,new fuel lines and a new fuel filter.I can't get the primer bulb to fill with fuel.I've tried with the carb attached & unattached to the engine block.I took pics of the fuel line configuration before I started so they are re-connected properly. You can look at a parts diagram for your product at [www.searspartsdirect.com]. If you need further assistance, please resubmit your question. The good news is that you don’t have to panic or run to buy a new lawn mower. It is not leaking the gas anymore. Then today, after the boat had been sitting un-used for 24 hours, again I felt the primer bulb and again I noticed that it was not hard. If the primer is not working most likely, the primer line has come of the carburetor or has a hole in it. Most small engines will not start if the carburetor is dry. Ray Bobo says: July 18, 2017 at 1:02 pm. Pry retainer out and remove bulb from primer seat groove. I think I too have a Primer that is not working properly. One of the hoses was broken leading to the carby. I replaced gas filter and new gas. The ball and spring will fall out. I have a Craftsman snow thrower Model # 247.886911 I just got it back from Sears service center because when primed it would leak gas. The primer pushes air into the carburetor and forces a small amount of fuel into the throat of the carburetor. Replacing all components such as gaskets and fuel lines is always recommended when rebuilding or repairing equipment. Without gas in the combustion chamber, the engine will not fire. The primer bulb circulates the fuel through the fuel lines and back to the fuel tank. There is pressure building up at both the cap and at the fuel line that enters the primer bulb, but no fuel is getting into the bulb itself. Examine the bulb for corrosion or debris that may be interfering with the bulb's operation. They all say it fills with fuel and then squirts it onto the carb. How the Primer Bulb Works on a Briggs & Stratton 5 Horse Engine. If the receptacle is damaged, you will most likely have to replace the flashlight. Blower, lawn mower, weed eater, trimmer Relevance. Thank you for watching! What are the steps to replace the drag link on Craftsman lawn tractor model? This will help in locating the parts on the product. 2 years ago. Contrary to popular belief, it does not squirt a little gas into the engine to get it going. Gaskets. I have spent considerable time reading about how a small engine primer bulb works. elhigh. What cause the primer bulb not to fill up with gas when i press it in on a weedwacker? if the primer base is stop up how do i check it? You should be able to see the primer line. If the primer line is sticky feeling, you have to replace the line. The primer bulb on a Briggs and Stratton 5 horsepower engine is located on the back of the air filter assembly next to the carburetor. Gas is flowing to carburator,, I know this because when I took off bolt to drain from carb. I have included an image of where the line connects to the carburetor. The vacuum can't work if the rubber bulb is cracked or torn, or if its seal is compromised, say, by old, stiff material. My mower’s prime bulb never has … Lv 7. Over here on the product garden Hose bulb may be interfering with the bulb receptacle. 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